“We are continuing to sort out who did what and when,” said Police Chief Paul Schnell. Schnell told the Star Tribune late Tuesday morning that the arrest in Minneapolis of 17-year-old Trashaun N. Morris, address unknown, brings all three suspects into custody.

Charged Monday in Dakota County District Court with first-degree riot resulting in death and second-degree assault was Samson Chu, 16, of St. Paul. Charged earlier with the same counts were Morris and 16-year-old Maurice Martin, of St. Paul.

The bus was letting off 40 to 50 passengers after a rolling birthday party celebration when the shooting occurred. Schnell said that a number of people who rode the bus “were quite intoxicated. Alcohol was certainly a factor.”

According to the charges, the bus was returning after a few hours of travel in the metro area. Passengers belonging to the “east side” group and others from a “west side” group argued throughout the trip. Schnell said the clash involved “rival gang affiliation.”

Aspiring 19-year-old rapper Billy Ray Robles, of St. Paul

Fighting erupted about 1:30 a.m., as the east side group members stepped off the bus first and were chased though the parking lot by members of the west side group, the court filings continued.

Two east side members, Morris and Martin, turned and allegedly started shooting. Robles was hit in the chest. Chu was shot in the ankle and was pulled over later that night in a speeding vehicle in West St. Paul.

The charges against Chu said that he fell to the pavement upon being shot, pulled a gun and returned fire at least eight times.

The bus, painted pink, was rented by a woman for a birthday party for her younger sister, police said. Passengers ranged in age from 16 to the mid-20s.

State and federal officials have paid Wisconsin deer farmers more than $330,000 in compensation so far this year after killing their herds out of concerns they were infected with chronic wasting disease.

Minnesota regulators reaffirmed their support Monday for Enbridge Energy's proposal to replace its aging Line 3 crude oil pipeline across northern Minnesota, while dozens of protesters walked out of the overflow hearing to make a point about climate change.

Two of Wisconsin's three Democrats in the U.S. House aren't saying yet whether they will back Nancy Pelosi as speaker, even as 16 maverick Democrats released a letter Monday saying they wanted "new leadership."